Ferromagnetism in Cr-Based Diluted Magnetic Semiconductors

• Authors: J. Blinowski , P. Kacman , J. Majewski
• Languages of publication: EN

Abstracts

EN

It has been recently established that in zinc chalcogenides with Cr^{2+} paramagnetic ions the p-d interactions are ferromagnetic. We clarify the origins of this property and make predictions concerning other Cr-based diluted magnetic semiconductors. The observation of the ferromagnetic p-d interaction resuscitated hopes for ferromagnetic d-d exchange interactions in diluted magnetic semiconductors. We have calculated the nearest-neighbor superexchange integrals in Cr-based diluted magnetic semiconductors. No simple correlation between the signs of p-d and d-d interactions has been found. Still, there are extended energy regions where the calculated superexchange is ferromagnetic and the act ual parameters of DMS with Cr^{2+} seem to match these regions.

Keywords

EN

71.70.Gm; 75.50.Pp; 75.50.Dd

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 1995
• Volume: 88
• Issue: 4
• Pages: 683-686

Dates

published

1995-10

Contributors

author

J. Blinowski

• Institute of Theoretical Physics, Warsaw University, Hoża 69, 00-681 Warszawa, Poland

author

P. Kacman

• Institute of Physics, Polish Academy of Sciences, Al. Lotników 32/46, 02-668 Warszawa, Poland

author

J. Majewski

• Walter Schottky Institut, Technische Universität München, Am Coulombwall, 85748 Garching, Germany